306530070 has 64 divisors (see below), whose sum is σ = 917208576. Its totient is φ = 63694080.

The previous prime is 306530047. The next prime is 306530071. The reversal of 306530070 is 70035603.

It is a self number, because there is not a number n which added to its sum of digits gives 306530070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306530071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64039 + ... + 68658.

It is an arithmetic number, because the mean of its divisors is an integer number (14331384).

Almost surely, 2^306530070 is an apocalyptic number.

306530070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

306530070 is an abundant number, since it is smaller than the sum of its proper divisors (610678506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306530070 is a wasteful number, since it uses less digits than its factorization.

306530070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132725.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 306530070 is about 17508.0001713502. Note that the first 3 decimals coincide. The cubic root of 306530070 is about 674.2552884188.

Adding to 306530070 its reverse (70035603), we get a palindrome (376565673).

The spelling of 306530070 in words is "three hundred six million, five hundred thirty thousand, seventy".